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Geophysical Research Letters

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Abstract/ Summary

Wavelet analysis offers an alternative to Fourier based time-series analysis, and is particularly useful when the amplitudes and periods of dominant cycles are time dependent. We analyse climatic records derived from oxygen isotopic ratios of marine sediment cores with modified Morlet wavelets. We use a normalization of the Morlet wavelets which allows direct correspondence with Fourier analysis. This provides a direct view of the oscillations at various frequencies, and illustrates the nature of the time-dependence of the dominant cycles.

Citation/Publisher Attribution

Bolton, EW, Maasch, KA, and Lilly, JM, 1995, A Wavelet Analysis of Pliopleistocene Climate Indicators: A New View of Periodicity Evolution: Geophysical Research Letters, v. 22, p. 2753-2756. To view the published open abstract, go to and enter the DOI.

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© Copyright 1995 American Geophysical Union




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In Copyright - Educational Use Permitted.